In almost all cases, changes in stance conditions, that is, EO versus EC and FiS versus FoS, resulted in a statistically significant change of TVPA, TVPD, ACE, and PL values.
The IMU, employing TVPA and TVPD indicators, can be used in clinical trials for assessing postural stability rather than the traditional posturography system.
Conversely, no significant difference in terms of correlation was found between the results achieved by the TVPA method and those by TVPD with ACE and PL.
Caption: Figure 6: Comparison of the data measured by IMU; TVPA: total volume of the polyhedron of the accelerations; TVPD: total volume of polyhedron of the angles; EO: eyes open; EC: eyes closed; FiS: firm surface; FoS: foam surface; B: presurgery; A: postsurgery.
The following plots (Figures 6 and 7) display the Min, Max, Mdn, Q1, and Q3 for the calculated TVpAs, TVPDs, ACEs, and PLs.